The parents of a child who died from measles said the disease is “good for the body," but an expert tells PEOPLE it can put children "in grave danger"

Two parents experienced the unthinkable when their unvaccinated six-year-old child died from measles last month, but vow that their four other children would still ‘absolutely not take’ the vaccine in spite of what happened. When the little girl first became sick, it seemed pretty clear that it was measles as other children in the community had it.